Christopher Polk/Getty ImagesGavin Rossdale was one of the many artists who performed at Linkin Park's Chester Bennington memorial show last month. Speaking to ABC Radio, the Bush frontman says that the show, during which he played the Minutes to Midnight track "Leave Out All the Rest," was a "very heavy experience."

"It was a great privilege to be asked to do that," Rossdale says. "It was incredible to work with the band, and just so sad [in] the context [of the show], and so sad to be -- for one song -- inside a huge machine that is Linkin Park and realize that they don't have their singer. They don't have their guy."

Rossdale adds that he felt a mixture of emotions during the show: sadness, fear, nervousness, and, eventually, joy.

"It is quite joyful to play music on stage and to sing things, even when things are sad," says Rossdale. "Mike [Shinoda] and the guys, they took on a huge challenge, I was just a tiny part of that challenge."

"It was pretty phenomenal. What they pulled off was pretty insane," he continues. "It turned into...feeling like a celebration of Chester."

Other artist who performed at the concert included Blink-182, Korn's Jonathan Davis, Bring Me the Horizon's Oli Sykes, and Alanis Morissette, plus members of No Doubt and Avenged Sevenfold. Throughout all of the performances, Rossdale was left with one thought.

"You did learn that there's no one that could take [Chester's] place," Rossdale says. "It wasn't like somebody came along and was, like, 'Whoa, this is how [the song should be sung].'"

"Everyone did really well," he adds. "But no one came close to Chester."